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Proposal for a system model for offline seismic event detection in Colombia

Miranda, Julian; Flórez Abril, Angélica; Ospina, Gustavo; Gamboa, Ciro Alberto; Altuve, Miguel; FLOREZ-GONGORA, CARLOS (Future InternetSuiza, 2020-12-18)

This paper presents an integrated model for seismic events detection in Colombia using machine learning techniques. Machine learning is used to identify P-wave windows in historic records and hence detect seismic events. ...
A proposal for updating the response spectrum of San Jose de Cucuta, Colombia

FLOREZ-GONGORA, CARLOS; MARQUEZ-PEÑARANDA, JORGE FERNANDO; Lozano Lozano, Carlos Fernando (IOP Conference Series: Materials Science and EngineeringColombia, 2020-06-29)

An analysis of seismic signals captured in three stations of the network of accelerographs of the Colombian Geological Service (SGC, by its acronym in Spanish) was developed for the city of San Jose de Cucuta, Colombia. ...
Testing stabilization of high-plasticity clays used in sloping terrain by adding sodium silicate

FLOREZ-GONGORA, CARLOS; Garzón-Peña, A T; Molina-Giraldo, R D (Journal of Physics: Conference SeriesReino Unido, 2020-08-05)

High-plasticity clays can be stabilized by the addition of a small percentage of sodium silicate. Sixteen mixtures of 4000 g with different concentrations of sodium silicate at difference percentage were designed, to which ...

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Proposal for a system model for offline seismic event detection in Colombia
...
Miranda, Julian | 2020-12-18

This paper presents an integrated model for seismic events detection in Colombia using machine learning techniques. Machine learning is used to identify P-wave windows in historic records and hence detect seismic events. The proposed model has five modules that group the basic detection system procedures: the seeking, gathering, and storage seismic data module, the reading of seismic records module, the analysis of seismological stations module, the sample selection module, and the classification process module. An explanation of each module is given in conjunction with practical recommendations for its implementation. The resulting model allows understanding the integration of the phases required for the design and development of an offline seismic event detection system.

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A proposal for updating the response spectrum of San Jose de Cucuta, Colombia
...
FLOREZ-GONGORA, CARLOS | 2020-06-29

An analysis of seismic signals captured in three stations of the network of accelerographs of the Colombian Geological Service (SGC, by its acronym in Spanish) was developed for the city of San Jose de Cucuta, Colombia. Earthquake Equivalent, Response Analysis (EERA) and DEGTRA4 software were used for analysis, processing and calculation of signal response spectra during the characterization and propagation modelling of the signal by profiles. For the accelerograms family, a normalization factor computed with respect to the Peak Ground Acceleration (PGA) was obtained by superposition against the typical design spectrum of the Colombian earthquake resistant code (NSR10). It was found that there is a band of frequencies above the maximum acceleration zone of the design spectrum of the current standard. This suggests a revision of the seismic threat of the city of Cucuta and the urgent need to develop the seismic microzoning, which would allow a substantial reduction of the seismic risk.

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Testing stabilization of high-plasticity clays used in sloping terrain by adding sodium silicate
...
FLOREZ-GONGORA, CARLOS | 2020-08-05

High-plasticity clays can be stabilized by the addition of a small percentage of sodium silicate. Sixteen mixtures of 4000 g with different concentrations of sodium silicate at difference percentage were designed, to which were carried out physical, mechanical and chemical characterization tests that allowed to analyze the behavior at intervals of time. Physical, mechanical and chemical properties of the soil were evaluated. Using stabilization with sodium silicate in high plasticity clays, changes in the physical, mechanical, and chemical parameters of the soil were achieved. Having satisfactory results with 3% saturation, optimal concentration, at time intervals of 2 days and 1 month; Then as time passes the soil tries to return to its initial properties, which establishes that the concentration of the Silicate and its effect on the physical and mechanical properties of the soil should be checked over a longer time interval. Studying the physical, mechanical, and chemical parameters of high plasticity clays by adding multiples mixtures of sodium silicate contributes to the understanding of the soil behavior on the pressure condition.

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